Bolt



Jan. 16,1923. 11,442,5u

E. M. VANDYKEI BoL'r. FILED DEc 2, 1919.

Patented lan lt, 1023.

fATENT t ELMER IVI. VAN DYKE, OF LYNDHURST, NEW JERSEY, ASSIGNOR TO MATI-IIS-VAN DYKE COIVPANY, OF TRENTON, NEYV JERSEY, A

J. TEATI-IIAS.

VAN DYKE AND PARTNERSHIP COMPOSEI) OF SAID BOLT.

AppIicaton filed December 2, 1919.

To all 'Lu/tom t may cozcern Be it known that'l, Emma M. VAN DYKE, a citizen of the United States, and a resident of Lyndhurst, in the county of Bergen and State of New Jersey,ihave'im'ented new and useful lmproveinents in Bolts, of which the following is a specification. i

This invention relates to quick releasable heads or n'uts of bolts, such as setting-111) bolts which are employed temporarily for holding work which is to be perinanently riveted, such as in ship buildingv structural iron workq and so forth, and have illustrated the invention as applied Vto a settingup bolt, although obviously it can be applied to any kind of a. bolt or equivalent device.

The objects of the invention are to lock the head or nut against release or turning in either direction in such a way as to prevent injury to the ribs, threads or other engaging means by efforts to turn the bolt and head or nut relatively to each other when so locked; to accomplish this by providing a bolt and head having cooperating longitudinal recesses or grooves with other and further longitudinal re'cesses or grooves formed in the bottoins of said first-mentioned recesses or grooves and each spaced from the side edges of said bottoms; to thus insure that when a looking key 'is inserted in such second or flirt-her longitudinal rece'sses or grooves it shall be spaeed from'the ends of the segmental ribs or threads, so that when relative turning of the 'head or nut upon its bolt is attempted none of the strain is brought upon said ends of the ribs or threads; to thus avoid mutilation of said ends of the ribs or threads, such as would prevent ready inter- ,looking of said ribs or threads, and thus retain the device in working condition for a longer period: to facilitate the construction and use of such looking means, ;md to obtain other advantages and results as may be brought out in the following description.

Referring to the accompanying drawings, in which like numerals of reference indicate the same parts throughout the several views,

Figure l is a side elevation of a setting-upbolt embodying .my invention;

Figure 2 is a Vertical seetional view through' the same on the line 2-2 of Fig. 4, an endA portion of one arm of the key being broken away for greater clearness; i Figure 3 is a similar View on the line Serial No. 341,853.

3-3 of Fig. 4, the shank of the bolt being shown in side eleVat-ion;

Figure 4: is a top plan vview of the head in locked position, and Figure 5 is atop plan view in position to shank.

Specifically describing the present e'rnbodinlent of the invention, the nuineral 1 designates the shank of my improved bolt, said shank having one end thereof screw-threaded, at 2, to receive a. convcntional adjustable nut The opposite end of said shank is provided with circuinferential ribs fl, portions of said ribs being cut away at opposite sides of the shank l and .longitudinally thereof to form smooth releasing Channels 5 for the purpose of quick sliding detachment of the head 6 long'itudinally of the shank. The ch annels 5 are of a width equal substantially to one-quarter of the circumference of the shank and of a depth substantially equal to the height of the ribs 4.

The head 6 is circuinferentially ribbed at correspondingly to the ribs 4: of the sha-nk, and has portions of its ribs cut away at opposite sides thereof, as at 8, to form releasing Channels similar to the Channels 5 of the shank 1. These Channels 8 are of a width substantially equal to one-quarter of the innei' periphery of the head and of a depth about equal to the height of the ribs, so as to loosely receive the ribbed portions 4: of the shank and slip over the same to allow sliding of the head 6 longitudinally of the shank 1, the channels 5 of the shank being` adapted to receive at the same time and in a similar manner the ribs 7 of the head. Both the Channels 5 and 8 of the shank 1. and head 6 are provided suhstantially centi'ally thereof with complemental key-grooves 9 and 10 respectively. adapted to receive the arms ll of a U-shaped key '12, preferably fornied of round wire oi"1'od for looking' the head 6 ou the shank.

In the' operation of the device the head 6 serves in a manner similar to the solid head of'afcoin'entional bolt being slipped onto the' shank l with its segmental ribs 7 sliding in vthe channels of the shank and with its Channels 8 receiving and sliding over the segmental ribs 4 of the shank, as shown by Figure 5. The head 6 is then given a quarter turn yto cause e'nga-g'ement of of the head be slid longitudinally of the the ribs 7 and L1 of the head and shank to prevent further longitudinal movenient of the head on the shank as shown by Figure 4. This action brngs the key-grooves 9 and 10 into registry to form keyways into each of which one arm of the key 12 is inserted with the key straddling the shank, as shown in Figures 2, 3 and 5. The key thus pre- Vents further rotation of the head on the shank. The shank can then be inserted through bolt openings in the members to be fastened together, and the adjusting nut 3 tightened to hold the said members between itself and the head 6 in the usual manner. In removing the bolt from the bolt openings, the key 12 is pulled out of the keyways and the head rotated a quarter turn.y after which it can be quickly slidVlongitudinally off the shank by means of the guideways 5 and 8. as before described. The shankcan then be pushed out of the bolt openings, if it is desired to insert a rivet as is customary in ship-building or structural iron work. lhen the bolt is applied to clamping or bolting two pieces of material together the tightening of' the nut 8 puts the material under compression and when the head 6 is rotated or unscrewed a quarte'r of a turn it immediately moves away from the inaterial clamped, and when the guideways 5 and 8 register with the ribs 7 and ft the spring of the material automatically forces the head 6 longitudinally of the shank to quickly release the head 6 from the shank 1 and the work. The quick detachable head 6 eliminates the waste of time incident to unscrewing the conventional nut, as is now the common practice, and furthermore enables the bolt to be released at the opposite side of the. work from that at which the nut has been applied.V as is very desirable in ship-building to save the time of the riveter. In applying the bolts, it is often necessary to hold the head while the adjusting nut is being tightened to prevent turning of the shank, and the two arms of the key 12 provi de etlicient looking means to prevent slipping of the head under such conditions. Furthermore the arrangement of the keyways at a distance from the ends of the segmental ribs 41 and 7 of the shank and head prevent contact of the key with said ribs and mutilation or injury to them when the head G is nut under strain of attempted rotation. The key 12 is conveuient-ly and inexpensively formed of round wire or rod, and the loop thereof between the arms provides a convenient grip for removing the key. To Compensate'for the ribs being partiall'y cut away on the shank 1' and head 6 the head is made long enoughV to produce the necessary eXte-nt of engagement to pre.- vent stripping. Preferablyz the cooperating circ-umferential ribs, on the shank and headf are screw threacls as. show-n, but this. is;r not necessary and various other modifications can be made without departing from the spirit and seo-pe of the invention7 as will be understood.

`he key 12 is preferably longer than the grooves 9 and 10 which receive it in locked position of the head, so that the bend or closedend of the key projects suiiciently beyond the end of the shank to provide an opening for the convenient insertion of a tool to pull out the key preparatory to releasing the head. Furthermore, it will be noted that when the head is in' locked position the circumferentially ribbed portions 4 of the shank lie in front of the key grooves 9 and 10, and this is of utility in the following way: Bolts of this sort are usually dipped in oil before being used, and the key grooves in the position just described become filled with the heavy oil which later gradually seeps outthrough the engaging threads of' the shank and head. This greatly lessens liability of the head becoming rusted upon the shank to such an eXtent that it cannot be released readily or without dama-ging it, and thus cond'uces to long life and easy manipulation of my improved bolt.

Having thus described the invention, what clai'm is: i

l. n av bolt, the combination with a shank havingA an end po'rtion provided with circumferential ribs, a removable annular head having interior ribs adapted to cooperate andenter betweenl the ribs of the shank, said ribs being cut away on both shank and head for opposite longitudinal portions thereof so that when the ribbed longitudinal portion of one is brought opposite the cut-away longitudinal portion of the other the head is free to movelongitudinally of' the shank, one of said cut-away portions on the head and one on the shank each having at a distance from its said side edges a longitudinal groove or recess, and a looking member adapted to be inserted in said grooves or recesses when they' register and be spaced thereby from the ends of the circumfercntial ribs.

2-. ln a bolt, the combination with ashank having an end porti'on provided with circumferential ribs, a removable annular head having interior ribs adapted to cooperatc and; enter between the ribsof the shank, said ribs' beingcut away on both shank and head for opposi-te longitudinal poi'tions thereof so that when the. ribbed l'cmgitudinal portion of one is brought opposite the cut-away longitudinalf portion of the other the head is free to move longitndinal'ly of the shank, one of said cut-away portions on the head and one on the shank' each having at a distance from itssa-id side edges a longitudinal groove or recess, and: looking member longer than said'l groores or recesses so as to proietit therefrom` and: having at its projecthaving an end portion provided with ciri cumferential ribs, a removable annular head having interior i'ibs adapted to cooperate and enter between the ribs of the shank, said ribs being cut away on both shank and head for opposite longitudinal portions thei'e'of so that When the ribbed longitudinal portion of one is brought opposite the cut-away longitudinal portion of the other the head is free to move longitudinally of the s-hank, cut-away portions on the head and s'hank having each at a distance from its side edges, opposite longitudinal recesses7 and a U- shaped looking member adapted to be inserted in said recesses to prevent relative turning of the head and shank, said looking member being longer than said recesses and having its outer end spaced from the bolt and to provide a hole for removal.

4. In a bolt, the combination of a shank having an end portion thereof provided With a pair of alined* circumferential grooves upon opposite sides of said shank and longitudinally extending channels between the ends of said grooves, and a head provided With a pair of ciroumferential ribs ada-pted to engage said grooves to hold the nut against longitudinal movement upon said shank, said ribs being separated by longitudinal Channels oorresponding to the channels in the said shank and the said rbs on the head and grooves in the shank registering respectively With the Channels in the shank and head to allow sliding of the head longitudinally of the shank, a pair of said channels in the head and bolt being foi'med With complemental longitudinally extending key grooves of substantially semi-circular crosssection, and a looking key having a cylindrical portion adapted to be inserted in said key grooves When in registration to prevent rotation of said head on the shank.

5. The combination of a bolt including a threaded shank having a pair of diametrically opposite longitudinally extending grooves formed therein the base of one of which is formed With a. further groove of rounded cross-section and spaced from the edges of said base in which it is formed, a quick adj usting nut having its threaded bore provided With a pair of diametrically opposed longitudinally extending grooves the base of one of which is formed With a further groove adapted to register With said first-mentioned further groove in the bolt When said bolt and head are assembled, and a looking member of rounded cross-section adapted to be inserted in the said further grooves of the bolt and head to limit relative rotation of said bolt and head.

ELMER M. VAN DYKE. 

